Bed Leveling leaving pockmarks in PEI after nozzle cleaning. (TPU)
I ran TPU for the first time and for the first time on my MK4. After the nozzle cleaning the tip is screaming hot and proceeds to do an auto bed level. As it levels it is leaving pockmarks in the PEI sheet. This does not affect the print and seams to adhere well. Although, in the future I will be using painters tape as it sticks TOO well.
My question is, can I add a cool down time to the g-code for the NinjaFlexTPU premade profile for the Autobed Leveling and re add a heat up after that is complete. I'm happy to add a few minutes to my prep time to prevent damaged to the PEI sheets. Or is the adhesion to a bare steel plate just as good with with TPU
Best Answer by FoxRun3D:
Leaving pock marks "in" or "on" the sheet? It's not unexpected to see tiny dots of material deposited where the nozzle touches down, but the nozzle shouldn't dig a hole into the sheet. I suspect it's just small deposits and with TPU they may be a bit hard to get off the sheet. With TPU you want to use a separation agent such as Magigoo, Layerneer, or glue stick. See Prusa's material table: https://help.prusa3d.com/materials
RE: Bed Leveling leaving pockmarks in PEI after nozzle cleaning. (TPU)
Leaving pock marks "in" or "on" the sheet? It's not unexpected to see tiny dots of material deposited where the nozzle touches down, but the nozzle shouldn't dig a hole into the sheet. I suspect it's just small deposits and with TPU they may be a bit hard to get off the sheet. With TPU you want to use a separation agent such as Magigoo, Layerneer, or glue stick. See Prusa's material table: https://help.prusa3d.com/materials
Formerly known on this forum as @fuchsr -- until all hell broke loose with the forum software...
RE: Bed Leveling leaving pockmarks in PEI after nozzle cleaning. (TPU)
Fuchsr, You are correct, it was just TPU oozing. I actually did use magigoo. Perhaps not enough.